I find it's more efficient (for me) to click the face to go to the face camera, rather than ctrl= or whatever. I don't know, seems to me it's no shortcut if you have to take your hand off the mouse to use two hands to hit the keys. Then find the mouse again. CTRL-S, Ctrl-D, z,x,c and v use only one hand so I use them constantly. Ctrl-U for Materials takes TWO hands so I use my mouse and get there from the menu. There is a method to my madness. My hand rarely leaves the mouse except to type in a name in a save dialog.